Adding-machine.



R. L. BURD.

ADDING MACHINE.

APPLICATION FILED APR.18,1908.

3 SHEETS-SHEET 1.

R, L. BURD.

ADDING MACHINE.

APPLICATION FILED APR.18.1908.

Patente@ 06115, 1909.

3 SHEETS-SEEET 2.

R. L. BURD.

ADDING MACHINE. APPLICATION FILED APR.1s,1908.

Patented Oct. 5, 1909.

3 SHEETS-SHEET 3.

Parana Brion.

ROY L. BURD, OF DETROIT, MICHIGAN, .LSSIGNOR TO BURROUGHS ADDING MACHINE COMPANY, 0F DETROIT, MICHIGAN, A CORPORATION 0F MICHIGAN.

ADDING-MACHINE.

Specification of Letters Patent.

Patented Oct. 51, 1909.

Application led April 18, 1908. Serial N o. 427,891.

To all whom 'it may concern:

Be it known that I, ROY L. BURD, a citizen of the United States, residing at Detroit, lVayne county, Michigan, have invented cerf tain new and useful Improvements in Adding-Machines, of which the following is a specilication.

This invention relates more particularly to that type of adding and listing machine in which provision is made for what is called splitting, meaning that the usual coperative action of the impression devices for the automatic filling in of ciphers is suspended at a predetermined point so that two distinct columns of imprints can be run, one Iliade up of designating numbers, for instance, and the other. of amounts. It fre? quently happens that when using an adding and listing machine in this way the designating numbersrun consecutively and where they extend as high as tens or hundreds or higher the same numeral keys would have to be repeatedly depressed, it being understood of course that with each operation of the machine anautomatic restoration of depressed numeral keys takes place. It will further be understood that it is customary in machines of this general character to employ a special keyusually called a repeat key which does awayv with the necessity of repeatedly depressing the same amount keys where the same amount is to be added and printed in successive operations of the machine. This well known special key does not however, provide for `such a contingency as that above mentioned, where the machine is split and higher order numerals of designating numbers would be the same in successive operations of the machine. f

The principal object of the present. invention is to provide for avoiding the necessity of repeatedly depressing 'the same numeral keys for designating numbers where such numbers run consecutively, and yso provision is madel for disconnecting the releasing or restoring devices for certain of the rows or sets of keys so that although depressed keys which represent amounts will be released as usual, keys used for designating numbers will not be released or restored automatically in an operation of the machine. Furtherlnore the usual `automatic release operation will include the row orset of keys which will be used for the units numeral of any designating number. For example, if vouchers were being listed in-their numerical order'with the amounts of the vouchers in a parallel vertical column, the machine would operate under a'split adjustment providing for enough rows of keys to accommodate the highest designating number being usable separately fromv the balance of the rows of keys which would be used to represent amounts, and the impression devices corresponding wth the first-mentioned division of keys being coperatively relatedfor cipher printing but not coperating for such purpose with the impression devices associated with the balance of the rows of keys. However, the disconnecting point in the key releasing or restoring mechanism would be located one step or decimal place to the left of that-where the disconnection in the impression devices occurs. Starting then with say voucher No. 1240, the 1, 2 and 4 keys would remain depressed until voucher No. 1250 was reached, the automatic restoring or releasing mechanism not taking effect upon the keys of the rows in which said 1, 2 and 4 keys would remain depressed, though it would take effect upon the `remaining row designating number would be depressed. It follows that under such an arrangement, instead of having to repeatedly' depress the 1, 2 and 4 keys, the operator would simply have to depress those keys once and then operate the machine ten times, changing the units numeral each time, and if the listing continued beyond this it would not be necessary to release all f the depressed keys before the usual column release key could -be manipulated to release the 4 key, thereas before.

Of the accmpanying drawings forming part of this specication, Figure 1 represents in right side elevation the interior parts of an adding and listing machine of the well known Burroughs type, the inven- F ig. 2 re resents on an enlarged scalea porltion of t e key releaslng mechanism 1n rear of keys in which the units numeral of theupon depressing the 5`key and proceeding tion in the present instancebeing shown as I adapted to that particular type of machine;

'medium of the lever S and the action ot the broadened upper part of said bar upon the roller d2 litts the latch piece and thereby uncouples the two sections ot the bail. rllhe adjustment under such conditions is illusfor the travel of the roller d2 to and fro as the bail proper or the right hand section of the bail lstructinre vibrates, while the left hand section remains at normal position.

itt will be obvious that the above described construction provides tor keys remaining depressed in rows ot keys whose detents cooperate with the lett handl section of the releasing bail. Therefore by simply depressing the key S when the machine is operating under a split adjustment work such ast-hat hereinbefore mentioned can be carried on without requiring repeated dcpression of the same numeral keys for designating serial numbers as of vouchers.

ln Figs. 6 and 7 there is illustrated a vknown form of mechanism for accomplishing the so-called split and for the details ot this mechanism reference' may be had to Patent llo. 825,205, issued duly 3, 1900, on

'the invention of C. lV. Gooch. 'llhe numeral 715 designates the usual-printing hammer which is operated by the lever 716, the latter being restrained by a latch 717 which is lifted by a pawl 718. As here shown the fifth latch from the left, see Fig. 7, .is made without the usual overlapping tail a2. rl`he tripping at this point for cipher. printing purposes is edected through the medium of a coupler A which slides and pivots on a shaft 706 and is equipped with pins'a2 and 11,3 engaging the tailless latch and1 the next adjacent latch .to the right. rlhis coupler is under the control of a bail A and the .latter is in turn under control of a key A2,

all as fully explained in the said Gooch patent. The particular character of the* mechanism 'for effecting the split is of noL particular importance in connection with the present invention, but as the latter is of special advantage in a so-called split and normal machine reference is made as above to the Gcbch construction whichprovides for establishing a split at will. j lt will have been noted that the split occurs between the fifth and sixth hammer latches, counting from the left, which means that tive rows of keys can be used for setting'up designating numbers. .Under such conditionsthe leit hand bail section should coperate with tht` detente of the four left hand rows of keys.

Although the titth row ot keys beginning i from t e lett belongs to the Adesignating number division of the machine, yet its de-y tent should be, tripped in each operation because that'row oilreys is used tor the unit numeral, which would ot course change with each operation ot the machine. Fig. 8 illustrates the location ot `the point ofdisconnection in the bail structure as related lto the rows of keys.

-While the above described construction is believed to be especially well adapted to carry out the object ot the invention, it is to be understood that the invention is not limited to that particular construction, nor to the particular type of adding and listing machinel to which it is here'shown adapted.

lVhat is claimed is:

1. ln a machine of the character described, the combination of rows of depressible keys, means for automatically restoring depressed keys or all rows simultaneously, said means being of sectional character, and manipulative means for uncoupling the sections to permit a key of one or more rows remaining depressed during successive operations ot the machine. while keys of other4 rows are restored. v

2. ln a machine of the character described, the combination of rows ot`depressible keys,

means `for automatically restoring depressed.

keys ot all rows simultaneously, said means being oit1 sectional character, manipulative means tor uncoupling the sections to permit a key of one or more rows remaining depressed during successive operations of the machine while keys of other rows are restored, and printing devices coperatively related tor the filling in of ciphers, with provisions for interrupting the coperative actionl at will between lthe printing device next beyond that which corresponds with the row of keys where automatic restoration is suspended and the next adjacent printing device to the right.

3. ln a machineoit the character described, the combination of rows of depressible amount keys, a sectional restoring bail, means for vibrating the same, and means for disconnect-ing its sections.

4l.- ln a machine of the character described, the combination of rows of depressible amount keys, a sectional restoring bail, a movable coupling between the sections, vibrating means applied to one section, and manipulative means for displacing the coupling to prevent vibration of the other section.

5. ln a machine oit' the character described, the combination of rows of depressible amount keys, a sectional restoring bail, a latch normally connecting the two sections of the bail, a latch lifting bar, a key, and operating connections between the same and said bar. l

llt)

` d: @www 6. In avmaehne of the chgimctel (lesciiloetl, upper edge o'f saiclvloar, a lever connected t0 the combination of i'QWS of depressible *the lamer, :incl :l depressible key connected amount keys, a sectional restoring bail, a le the lever.

pivo'tedrspljing-helcl latch connecting the see- BUY L. BURR?. 5 tions of thevbail and having a; roller, a latchl/Vi'nesses lifting bar engaging undersid roller which el. Gr. ViNCnNT,

in the vibration qi he bail traverses the R. S. MXELERT, 

